The Suitability Evaluation Of Settlements Location Of Typical Village In Jiulong,sichuan Province

The research on the settlement selection of villages is the basis for carrying out the planning and construction of village settlements,which is related to the life and production safety of the residents,and is also an important part of the research content of rural settlement geography.At present,the selection of residential sites for rural residents mainly involves the basic principles of site selection,the construction of evaluation systems,and the analysis of influencing factors.There are many investigations on geological hazards in Jiulong County.However,there are few studies on the suitability of settlements.Jiulong County is an area prone to geological disasters.Compared with other areas,the settlement site has its own particularity.Therefore,the research object is determined as the settlement site of a typical village in Jiulong County,which is realistic and necessary.First,we collect relevant basic research data.the research object are determined In accordance with the economic development status of each township,population size,geographical location and other factors;Then we interview expert,hand out questionnaires,so we determine the impact factors of village settlement selection from natural and socioeconomic aspects;finally,based on research data,we make statistical analysis of relevant influencing factors,establish the suitable evaluation index system for settlement selection of typical villages in Jiulong County,make suitability evaluation analysis,and propose settlement location optimization suitability strategy of Jiulong County Village.The main results obtained in this paper are:(1)Constructing a suitability evaluation system for village settlements in Jiulong County,including five first-level indicators and 15 second-level indicators;(2)Calculating various evaluations using analytic hierarchy process and expert scoring the weight of the factor.Among them,first-level index terrain(0.272),location conditions(0.273),and artificial conditions(0.212)have greater weight values,while geology(0.152)and hydrology(0.091)are relatively small,and secondary index elevation(0.112)and slope(0.112).The distance from the water source(0.107)has a large weight value,while the engineering geological rock group(0.027)and population density(0.027)have relatively small weight values.The weights of other indicators are relatively average;(3)After quantitative treatment of the indicators,the final results are obtained.The comprehensive scores of the three typical villages were judged to be appropriate,and the evaluation results were divided into four levels: suitability,good suitability,suitability,and poor suitability.Research shows that there are obvious differences in the suitability of settlements under different natural conditions,location conditions and human conditions.The location of settlements in Yandai Village,Jiulong County is suitable,the suitability of the settlements in the Zhongxin villages is good,and the suitability of the settlements in the village of Bailin is suitable.There are excellent suitability in the northwest and southeast of the 215 provincial highways in the county,with good suitability in the east and suitability in the west.